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18%
Introduction to behavior-driven monitoring
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Mariya Herasymenko, 123RF
Scenarios: 21 cucumber /usr/lib/nagios/plugins/cucumber-nagios/checks/features/www.xing.com/startpage.feature:4 # Scenario: Visiting home page 22 23 1 scenario (1 failed) 24 4 steps (1 failed, 3 skipped) 25 0 ... 3
18%
Docker image security analysis
01.08.2019
Home »  Archive  »  2019  »  Issue 52: Stop...  » 
Photo by Rodolfo Sanches Carvalho on Unsplash
exists, renaming the old one with ID sha256: f09fe80eb0e75e97b04b9dfb065ac3fda37a8fac0161f42fca1e6fe4d0977c80 to empty string Loaded image: nginx:latest With the docker images command, you can see
18%
Serverless computing with AWS Lambda
30.01.2020
Home »  Archive  »  2020  »  Issue 55: AWS L...  » 
Lead Image © joingate, 123RF.com
Id: 4e90b424-95d9-4453-a2f4-8f5259f5f263 Duration: 70.72 ms Billed Duration: 100 ms Memory Size: 128 MB Max Memory Used: 55 MB Init Duration: 129.20 ms More or Less
18%
Saving Storage Space with Reduced Precision
19.06.2023
Home »  HPC  »  Articles  » 
object O Python object A simple example from nkmk creates a float64  data type (64-bit floating-point number): import numpy as np a = np.array([1, 2, 3], dtype=np.float64
18%
The fine art of allocating memory
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
); i+= 4096) newblock[i] = 'Y'; 12 printf("Allocated %d MB\n", allocation); 13 } 14 } Things are more interesting when memory is being used. Uncommenting line 11 does just that. The OOM
18%
Why Good Applications Don't Scale
02.02.2021
Home »  Archive  »  2021  »  Issue 61: Secur...  » 
Lead Image © man64, 123RF.com
.2. Assigning the base serial portion s B = 0.195, independent of n , leaves the communication portion s C = 0.005. Figure 2 shows the plot of speedup a as a function of the number of processors
18%
Julia Distributed Arrays
15.08.2012
Home »  HPC  »  Articles  » 
=readall(`date`) "Tue Jul 31 15:51:58 EDT 2012\n" julia> print(d) Tue Jul 31 15:51:58 EDT 2012 In addition to efficient shell integration, Julia also has a very nice C and Fortran interface. Typically, every new
18%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
[i] + b[i]; } When the number of cycles is known at compile time, a loop can be fully unrolled: c[0] = a[0] + b[0]; c[1] = a[1] + b[1]; c[2] = a[2] + b[2]; c[3] = a[3] + b[3]; However, it remains
18%
Intruder Detection with tcpdump
28.11.2011
Home »  Articles  » 
 
is to put it in a filter: # tcpdump -n -s 1515 -c 5 -i eth1 tcp or udp or icmp This will catch only tcp , udp , or icmp . Tables 3 and 4 show you what you need to know to find all TCP packets with the SYN
18%
Monitoring events with the Audit daemon
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © alphaspirit , 123RF.com
e syscall=2 success=yes exit=3 a0=7fff67b1e9fc a1=0 a2=1fffffffffff0000 a3=3109e85ad0 items=1 ppid=7144 pid=11992 auid=1000 uid=1000 gid=1000 euid=1000 suid=1000 fsuid=1000 egid=1000 sgid=1000 ... 25

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